this, you'll have no horizontal force at the roller, but you will have it at the pinned support. If you wouldn't, then the structure will be displaced.
Usually, in 2 dimensional structures, if you want to know if an articulated structure is isostatic (as opposed to hyperstatic, which is what you have right now) is to use the following formula:
b+c-2·n=0;
b being the number of bars, c the number of constraints you have and n the number of nodes. In your case: b=19, c=3 (displacements constrained in X, Z at your pinned support and only constrained in Z at your roller support) and n=11, so: 19+3-2·11=0.
I recommend you to download the app SW Truss, as it's very useful to check your results instantly.…
wich is nice actually :-) But I had 2 problems that make every thing just impossible to use : DIRECTION OF STEPS :
The motor can just reach one direction (for exemple clockwise) and when comes time to switch... not possible.
Details : When I put a value in HD.SM in V input, I put for exemple 100 with a slider so i have 100 steps and it works. Then I write 200, still working. and when I put a value that is less than the last higher value, for exemple 180 in my case the motor go endless to an higher amount, i mean 201,202,203...1000 etc... Dont undestand why :-/ SPEED : The speed is really really slow.
Details : The Firefly stepmotor component use the same library as heteroduino wich is Accelstepper.h but still going way faster. I tried lot of values in the S input (speed) but is not changing the speed that much, and sometimes its even changing the steps.
If there is another place where I have to post this, let me know also and I'll do it :-)
See you soon and hope some people are interested in the same problem ^^thanks :-)…
(http://www.food4rhino.com/app/quelea-agent-based-design-grasshopper) take like 40 seconds when the toggle activates to go from one end of the ramp to another.
With proximity 3d i'm analyzing each instance the agents are closer than x units. In picture 3 we can see that in 212 instances the agent are closer than those x units.
Finally all the genes that controll the ramps are connected to the G of octopus component and one of the conflicting objectives connected to the O of octopus component is the number of instance quelea agents get close.
So the thing I need is to iterate the ramps controling the genes with octopus but activating the boolean toggle (quelea run) each time the ramps are modified so the agents take 40 seconds to perambulate the environment, analyze the instance they get close and let octopus iterate again searching for a optimized environment.
…
nd me to kill him but give him my regards anyway) is still around in BirdAir Italy ... talk with him.
3. Hope that you understand that designing the "details" means some decent MCAD app + FEA + this + that. "Fusing" this with some abstract graphic editor like GH ... is ... er ... impossible (in real-life, you know, he he ). Generative Components on the other hand may qualify but requires a lot of time in order to fully master it (approx 2-4 years).
4. FormFinder ... well ... that's utterly Academic but on the other hand ... (good luck).
http://www.formfinder.at/main/software/team/
5. http://tecno.upc.edu/cotens/software.htm
6. This is the second best (after the BirdAir internal stuff) but costs an arm and a leg
http://www.ndnsoftware.com/
7. This is a !%$!%$ in the !%$%!$:
http://www.sofistik.com/no_cache/loesungen/fem/leichte-tragwerke/
My realistic (low cost) advise:
use K1/2 (especially if you are after "parametric" exploitation(s)) ... and then diversify tasks: stuff for the structural department, stuff for whom claims that he can(?) design the "details" ... whilst be in a constant contact with the membrane provider (and in fact: the contractor for doing the real thing as well)
…
o: http://github.com/HeinzBenjamin/FlexCLI/issues
Download
You can find FlexHopper here:
http://www.food4rhino.com/app/flexhopper
and here:
https://github.com/HeinzBenjamin/FlexCLI
Info
FlexHopper offers physics computation in Grasshopper. It is GPU-based and therefor very fast. Currently supported modes of simulation are: free particles, fluids, rigid bodies, soft bodies, tensile structures and cloth, custom constraints.
FlexHopper is a Grasshopper plugin built on top of FlexCLI - Flex Common Language Interface. FlexCLI is built against NVidia Flex release 1.1.0. NVidia Flex is patented property of NVidia. FlexCLI and FlexHopper are openly accessible under the GNU License through my Github account. (Link above)
For more information on NVidia Flex go here: https://developer.nvidia.com/flex and https://developer.nvidia.com/nvidia-flex-110-released
FlexCLI runs on x64 architectures only. It was built against .Net 4.5.2
FlexHopper was tested with Rhino5 64bit and Grasshopper 0.9.0076 WIP
Requirements
Windows 7, 8, 8.1 or 10 64bit
NVidia or AMD Graphics Card
NVIDIA: GeForce Game Ready Driver 372.90 or above
AMD: Radeon Software Version 16.9.1 or above…
basis).
2. Rhino does not have a proper object display capability (objects per layer per view basis and/or per "collections" per view).
3. TSplines does NOT have any on-the-fly coordinate system definition capability (making "edit" a pointless waste of time). A small example about what this means as regards view navigation matters: imagine "hoovering" along a myriad of 3d objects: if you choose/opt for it: the moment that you touch an element (that could define a vector): this instantly becomes the working plane Z axis (very common capability in top MCAD apps). Not the same as a SpaceNavigator controller mind (far from it).
If these 3 were available > rebuilding anything with TSplines could be a joy (and very fast: about 2 minutes for your mesh)
Get this as well - Load Rhino file first attached in my previous reply (just for fun: not for your case, but we could do an extra WOW MERO spaceframe out of this paranoid M mesh).
BTW: Exo W is "tricky"…
->Components Folder" folder.
In that case download it from food4rhino.
OR
2) There is, but it has been blocked.
In that case:Right click on the ghpython.gha file, and choose "Properties". If there is an "Unblock" button click on it, and then click on "OK". If there is no "Unblock" button, just click on "OK".
After completion of either of these two steps, close Rhino and Grasshopper, and run them again.
Let us know if worked.
On creation of buildings: Gismo will generate 3d buildings by extracting the height or number of stories data from .osm file.
The user itself does not need to do this manually.…
Added by djordje to Gismo at 12:56pm on February 7, 2018
imply lets you communicate with the chip in real time with other peripherals. In my case, I'm using the Xbox Kinect to read visual movements, assign a point ID to something like the left and right hand, translate its x-coordinate into a number, and have that number move a robotic arm servo. Sorry if this sounds like your upcoming robotic apocalypse.
My problem is that because my hand is always moving, it is continually reading the data in real time and crashing Arduino because it is continually processing the rotational distance (in degrees between 0-179). For example, if my hand was moving from 1 to 50 degrees, it's computing 1, 2, 3, 4, 5, 6, ..etc instead of 1 and 50 as two separate states.
Is there a way to have a component refresh its value in a certain interval? This would mean it could read my hand at different intervals and print a value at timed increments instead of doing it all in real time. A simple practice exercise would be to create a random component and have the component refresh so that every 1 second or so it would produce a different number. The app is essentially refreshing. I thought the Timer component worked, but I misunderstood what it's used for, and I don't think it does what I intend it to do.
I've attached some pictures to show what I'm attempting.
And a file to recreate the problem with a different instance.
Thanks so much for your help! …
ess more memory on 64 bits. So you can load larger files and generate more data.
Every time you store something in memory it has to be stored at a specific location. We call this location an address. The first thing you store can be stored at address 0*. If that thing requires a total of 18 bytes, then addresses 0 through 17 are used up. The next thing you store can then be stored at address 18. And so on and so forth. At some point you run out of addresses and when that happens there is no more room to store any new data and there is thus nothing more that your app can do and that's usually when Windows shoots the application in the head and buries the remains behind the chemical sheds.
The total number of unique addresses that can be represented by a 32-bit integer is 4,294,967,295 (4 GigaByte). However Windows only allows a 32-bit app to access 2GB, or potentially 3GB if a special switch is set. A 64-bit application is allowed to use 64-bit integers to identify memory addresses, which means the highest possible address is now 18,446,744,073,709,551,616 (or 18.45 ExaBytes). Basically, as long as you have RAM to back you up, a 64-bit application will not run out of memory. Of course it may still become prohibitively slow as a lot of data requires a lot of computation and 64-bitness does absolutely nothing to make things go faster.
--
David Rutten
david@mcneel.com
Vienna, Austria
* Not true in reality, Windows will already use up some of the available memory just to load the application.…
Added by David Rutten at 1:39pm on November 2, 2012
rella - Revit/AECOSim etc etc) then scripting is the only way to do business. In fact Dynamo/Generative Components would be your main parametric app ... but GH can offer a thing or two as well.
Other than that here's a very brief explanation upon the "steps":
1. Using connectivity trees (faces to edges, edges to faces, faces to faces) ...
2. ... Find the "internal" edges (meaning edges that are connected to more than ONE face) and store them in a tree. Doing this find the smallest edge as well (for defining the "module" of the pts divisions minus the start/end offset). Used an object type tree since I store the indices of the adjacent faces as well (an object type is a "general" container that can hold cats, dogs, numbers, bananas etc etc ... with the cost of un-boxing when an item is to be used [Note: un-boxing costs time but in this very simple case we can afford the "luxury"]).
NOTE: if you observe the paths on that tree you'll notice that they correspond 1:1 to the indices of the related edges in the EList List (of type Curve).
3. Loop withing the "interior" edges and define the coplanar vectors per edge related with the 2 adjacent faces. These vectors are the Cross Product (Google that) between the edge direction and the normal per face (at u/v: 0,0). Divide the edge (taking into account the start offset AND the ratio of the edge length/ minEdge [as derived from phase 2 as above]). Using these points create a "zing-zag" polyline and store it in the same path as the OEM edge.
NOTE: The polyline is not planar since each teeth is laying to the corresponding adjacent face plane (if the Brep Faces are not planar more "smart" stuff is required).
From this point (not included in V1):
4. Using Face to Edge connectivity data: IF a path exists (in the polyline tree as in 3 above) with the given index sample this polyline as Curve ... if not get the OEM Curve (case: "boundary"/perimeter Brep Faces). Join the Curves (take provision to report failures) and project them to the corresponding Brep Face plane (case: planar face) or ... to some suitable "mean" plane. Define a planar Brep out of the newly created closed planar Curve and extrude it (actually the Brep Face of it) both sides at once for doing a "solid". If Brep Faces are not planar ... well things are a bit more complicated (not nuclear science ... just another approach is required).
In fact ... is a bit more challenging than that since there's assembly tolerance AND clash issues around ... but this is the "general" idea anyway. …